Improvement in pumps



A. s. CAMERON.

4 PUMP. No.1s4,5ae.

. Patented Nov. Z1, 1876.

UNITED1 STATES 'Pa'nlwt' 'OFFICE'.

ADAM S. CAMERON, OF NEW YORK, N. Y.

IMPROVEMENT IN PUMPS'.

Specification forming part of Lettere Patent N o. 184,586, dated November 21,1876; application tiled October 11, 1ts76.

To all f'whom it may concern:

Be it known that I, ADAM S. CAMERON, ot' the city, county, and State ot New York, have invented a new and useful Improvement in Pumps, which improvement is fully set forth in the following specitication, reference being had to the accompanying drawing, in which- Figure 1 represents a vertical section in the plane a: x, Fig. 2. Fig. 2 is a vertical section in the plane y y,'Fig. 1. Fig. 3 is a detached plane ot' one ot` the discharge-valves.

Similar letters indicate correspondin g parts.

This invention relates to a pump composed of three or more cylinders, which radiate from a common suction-chamber, and the pistonsvot' which receive their motion from one 4and the same crank-pin, the connection ot` this crank-pin with the pistons being inclosed in the suction-chamber. r)The communication between the suction-chamber and the interior of the cylinders is controlled by valves in the pistons, and the' valves through which the liquid discharges from said cylinders are mounted in diaphragms situated between the cylinders and the bonnets that cover them.

In the drawing, the letter A designates a circular chamber, from which radiate three or more cylinders, B. One side of this chamber is closed, andthe other side is open and provided with a closely-fitting cover, C, which is secured in position by screws or any other suitable means. `From the closed side of the chamber A extends a projection, D, which forms the bearing for a shaft, E, that extends into said chamber, and is provided with a crank-pin, F. Each of the cylindersB contains a piston, G, and all the pistons are connected, by means of rods H, with the crankpin F. The inner ends of the rods H are made T-shaped, with concave faces, which fit the surface ofthe crank-pin', and, by slipping over said T-shaped ends a ring, I, a simple and et'- icient connection between the rods H and the crank-pin F is produced. The ring I is retained in position by a washer and screw, as

shown in Fig. 2. Any other suitable means may, however, be adopted for connecting the rods lil to the crank-pin. is provided at its outer end with openings a, on which is placed a valve, b, that moves on a Each, of the pistons guide-pin, c. The cylinders B are open at their outer ends, and on these ends are secured diaphragmsJ and bonnetsK. Said diaphragms are provided with apertures d, (see Fig. 3,) and with a port, e, the apertures d being situated inside of a circle, the diameter of which is equal to the bore of the corresponding cylindex', while the port e is situated outside of said circle, and when the diaphragm is in position, said port corresponds with a channel, f, that leads to the ascension-pipe L. Over the apertures d in each diaphragm is placeda valve, M, which opens outward, and is guided by a pin, g. A spring, h, has a tendency to keep this valve down upon its seat. The bonnets K are concave on their inner surfaces, so that when the valves M are opened a communication is produced between the interior of the cylinders and the channels f, which lead to the ascension-pipe. The chamber A is provided with a hole, in which is secured the suction-pipe N. In the example shown iu the drawing this suction-pipe is secured in the cover C ofthe chamherA; but it may be secured in any other portion of said chamber.

If the cran k-shaft E is revolved, one or more of the pistons G move outward, and the others inward. By the outward motion of each piston a suction is produced, whereby the chamber A is filled with liquid, while the liquid which may be contained in the outer ends ot' the respective cylinders is forced out, through the valve M and channels f, to the ascension-pipe L. At the same time the valves B of those pistons which move inward are forced open, and the liquid is admitted to the outer ends ot' the respective cylinders. these means a pump is obtained which can be worked with very great speed in either direction,and which works with very good effect.

It will be noticed that all the working parts are inclosed in the suction chamber A, so that the same are constantly kept lubricated by the liquid which passes through the pump.

What I claim as new, and desire to secure by Letters Patent, is

l. In a pump, the combination of a central suction-chamber with a series of cylinders radiating from said chamber, and with a crankshaft, the crank-pin of which is situated in the interior of the suction-chamber, and connects In testimony that I claim the foregoing I have hereunto set my hand and seal this 9th day of October, 1876.

with the pistons Working in tbe several cylinders, substantially in the manner shown and described.

tion-chamber A, radiating cylinders B, and pistons G, of diaphragms J and concave bonnets K, the pistons and diaphragms being Witnesses: provided with valves, substantially in the manner and for the purpose set forth. i

2. The combination, with the central suc- A. S. QAMERON. [L. s.]

W. HAUFF, i E. F. KASTENHUBEB. 

